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That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Huacai Chen , =?UTF-8?Q?Philippe_Mathieu=2DDaud=C3=A9?= , Jiaxun Yang , QEMU Developers , Huacai Chen , Aleksandar Rikalo , Aurelien Jarno Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi, Aleksandar, On Sun, May 3, 2020 at 6:50 PM Aleksandar Markovic wrote: > > =D0=BD=D0=B5=D0=B4, 3. =D0=BC=D0=B0=D1=98 2020. =D1=83 12:21 Huacai Chen = =D1=98=D0=B5 =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0= =D0=BE/=D0=BB=D0=B0: > > > > Loongson-3 CPU family include Loongson-3A R1/R2/R3/R4 and Loongson-3B > > R1/R2. Loongson-3A R1 is the oldest and its ISA is the smallest, while > > Loongson-3A R4 is the newest and its ISA is almost the superset of all > > others. To reduce complexity, in QEMU we just define two CPU types: > > > > 1, "Loongson-3A1000" CPU which is corresponding to Loongson-3A R1. It i= s > > suitable for TCG because Loongson-3A R1 has fewest ASE. > > 2, "Loongson-3A4000" CPU which is corresponding to Loongson-3A R4. It i= s > > suitable for KVM because Loongson-3A R4 has the VZ ASE. > > > > Huacai, thanks for putting together v3, which is a little better than v2,= and > thanks for addressing my previous suggestions. > > Now, give us some time to digest new data on Loongson3. We will > respond, but it won't happen immediately, which is, you'd agree, > reasonable. Just be patient. > > But again, in general, I salute your efforts very much! > > Yours, Aleksandar I'm sorry for this late response because I have done many tests to reproduce the problem reported at https://patchew.org/QEMU/1588501221-1205-1-git-send-email-chenhc@lemote.com= /, but I don't have such a failure... What I have done: 1, "make check" on MIPS64 platform (distro is Fedora28 for Loongson); 2, "make check" on X86_64 platform (distro is RHEL8); 3, "make docker-test-quick@centos7 SHOW_ENV=3D1 NETWORK=3D1" on X86_64 platform (distro is RHEL8); 4, "make docker-test-quick@centos7 SHOW_ENV=3D1 J=3Dn NETWORK=3D1" on X86_6= 4 platform (distro is RHEL8 and I've tried n=3D2,3,4....14); I always get the same result: Not run: 259 Passed all 117 iotests And, it seems that my patchset doesn't touch anything about iotests, so I don't know why the build test fails on iotests 192 (Maybe your build test has the same problem without my patches). P.S.: I have found a problem that my patchset has a build failure with CONFIG_KVM=3Dn, but this is another problem and I will send V4 to fix it (after collecting all problems in V3). > > > Loongson-3 lacks English documents. I've tried to translated them with > > translate.google.com, and the machine translated documents (together > > with their original Chinese versions) are available here. > > > > Loongson-3A R1 (Loongson-3A1000) > > User Manual Part 1: > > http://ftp.godson.ac.cn/lemote/3A1000_p1.pdf > > http://ftp.godson.ac.cn/lemote/Loongson3A1000_processor_user_manual_P1.= pdf (Chinese Version) > > User Manual Part 2: > > http://ftp.godson.ac.cn/lemote/3A1000_p2.pdf > > http://ftp.godson.ac.cn/lemote/Loongson3A1000_processor_user_manual_P2.= pdf (Chinese Version) > > > > Loongson-3A R2 (Loongson-3A2000) > > User Manual Part 1: > > http://ftp.godson.ac.cn/lemote/3A2000_p1.pdf > > http://ftp.godson.ac.cn/lemote/Loongson3A2000_user1.pdf (Chinese Versio= n) > > User Manual Part 2: > > http://ftp.godson.ac.cn/lemote/3A2000_p2.pdf > > http://ftp.godson.ac.cn/lemote/Loongson3A2000_user2.pdf (Chinese Versio= n) > > > > Loongson-3A R3 (Loongson-3A3000) > > User Manual Part 1: > > http://ftp.godson.ac.cn/lemote/3A3000_p1.pdf > > http://ftp.godson.ac.cn/lemote/Loongson3A3000_3B3000usermanual1.pdf (Ch= inese Version) > > User Manual Part 2: > > http://ftp.godson.ac.cn/lemote/3A3000_p2.pdf > > http://ftp.godson.ac.cn/lemote/Loongson3A3000_3B3000usermanual2.pdf (Ch= inese Version) > > > > Loongson-3A R4 (Loongson-3A4000) > > User Manual Part 1: > > http://ftp.godson.ac.cn/lemote/3A4000_p1.pdf > > http://ftp.godson.ac.cn/lemote/3A4000user.pdf (Chinese Version) > > User Manual Part 2: > > I'm sorry that it is unavailable now. > > > > We are preparing to add QEMU's Loongson-3 support. MIPS VZ extension is > > fully supported in Loongson-3A R4+, so we at first add QEMU/KVM support > > in this series. And the next series will add QEMU/TCG support (it will > > emulate Loongson-3A R1). > > > > We already have a full functional Linux kernel (based on Linux-5.4.x LT= S > > but not upstream yet) here: > > > > https://github.com/chenhuacai/linux > > > > How to use QEMU/Loongson-3? > > 1, Download kernel source from the above URL; > > 2, Build a kernel with arch/mips/configs/loongson3_{def,hpc}config; > > 3, Boot a Loongson-3A4000 host with this kernel; > > 4, Build QEMU-5.0.0 with this patchset; > > 5, modprobe kvm; > > 6, Use QEMU with TCG (available in future): > > qemu-system-mips64el -M loongson3,accel=3Dtcg -cpu Loongson-3A10= 00 -kernel -append ... > > Use QEMU with KVM (available at present): > > qemu-system-mips64el -M loongson3,accel=3Dkvm -cpu Loongson-3A40= 00 -kernel -append ... > > > > The "-cpu" parameter can be omitted here and QEMU will use the corre= ct type for TCG/KVM automatically. > > > > V1 -> V2: > > 1, Add a cover letter; > > 2, Improve CPU definitions; > > 3, Remove LS7A-related things (Use GPEX instead); > > 4, Add a description of how to run QEMU/Loongson-3. > > > > V2 -> V3: > > 1, Fix all possible checkpatch.pl errors and warnings. > > > > Huacai Chen(7): > > configure: Add KVM target support for MIPS64 > > hw/mips: Implement the kvm_type() hook in MachineClass > > hw/mips: Add CPU IRQ3 delivery for KVM > > target/mips: Add Loongson-3 CPU definition > > target/mips: Add more CP0 register for save/restor > > hw/mips: Add Loongson-3 machine support (with KVM) > > MAINTAINERS: Add myself as Loongson-3 maintainer > > > > Signed-off-by: Huacai Chen > > --- > > MAINTAINERS | 5 + > > configure | 2 +- > > default-configs/mips64el-softmmu.mak | 1 + > > hw/core/Makefile.objs | 2 +- > > hw/core/null-machine.c | 4 + > > hw/mips/Kconfig | 10 + > > hw/mips/Makefile.objs | 3 +- > > hw/mips/common.c | 31 ++ > > hw/mips/mips_int.c | 4 +- > > hw/mips/mips_loongson3.c | 901 +++++++++++++++++++++++++++= ++++++++ > > include/hw/mips/mips.h | 3 + > > target/mips/cpu.h | 28 ++ > > target/mips/internal.h | 2 + > > target/mips/kvm.c | 212 +++++++++ > > target/mips/machine.c | 6 +- > > target/mips/mips-defs.h | 7 +- > > target/mips/translate.c | 2 + > > target/mips/translate_init.inc.c | 86 ++++ > > 18 files changed, 1300 insertions(+), 9 deletions(-) > > create mode 100644 hw/mips/common.c > > create mode 100644 hw/mips/mips_loongson3.c > > -- > > 2.7.0 -- Huacai Chen